THE CHIFFCHAFF FILES
ID Iberian Chiffchaff on call
Mystery chiffchaff at Castricum
Why this green-and-yellow bird is not an Iberian Chiffchaff
Genetic identity of grey chiffchaffs in the Netherlands (with Peter de Knijff) About birds with Siberian Chiffchaff mtDNA (DB article)
Proven tristis (with Peter de Knijff)
Photographs of birds with Siberian Chiffchaffs mtDNA: make up your own mind instead of letting us tell you what to think!
Unexpected Siberian Chiffchaff look-alikes (with Peter de Knijff) Proven (nominate) Common Chiffchaffs can look scarily similar to Siberian
Siberian Chiffchaff with Common Chiffchaff calls An mtDNA tristis with recorded Common Chiffchaffs calls
Chiffchaffs from the southeast
There's a new DNA proven vagrant to NW Europe: Chiffchaff ssp. brevirostris or caucasicus. Can they be ID'd in the field?